Which expression is equivalent to (8x - 1) (4x + 3) ?

Answer:

65

Step-by-step explanation:

Answer:

the answer is 4882.50, hope this helps

Answer:

Step-by-step explanation:

Answer:

[tex]Mean = 68.9[/tex]

[tex]s^2 =18.1[/tex] --- Variance

Step-by-step explanation:

Given

[tex]\begin{array}{cccccc}{Class} & {51-58} & {59-66} & {67-74} & {75-82} & {83-90} \ \\ {Frequency} & {6} & {3} & {11} & {13} & {4} \ \end{array}[/tex]

Solving (a): Calculate the mean.

The given data is a grouped data. So, first we calculate the class midpoint (x)

For 51 - 58.

[tex]x = \frac{1}{2}(51+58) = \frac{1}{2}(109) = 54.5[/tex]

For 59 - 66

[tex]x = \frac{1}{2}(59+66) = \frac{1}{2}(125) = 62.5[/tex]

For 67 - 74

[tex]x = \frac{1}{2}(67+74) = \frac{1}{2}(141) = 70.5[/tex]

For 75 - 82

[tex]x = \frac{1}{2}(75+82) = \frac{1}{2}(157) = 78.5[/tex]

For 83 - 90

[tex]x = \frac{1}{2}(83+90) = \frac{1}{2}(173) = 86.5[/tex]

So, the table becomes:

[tex]\begin{array}{cccccc}{x} & {54.5} & {62.5} & {70.5} & {78.5} & {86.5} \ \\ {Frequency} & {6} & {3} & {11} & {13} & {4} \ \end{array}[/tex]

The mean is then calculated as:

[tex]Mean = \frac{\sum fx}{\sum f}[/tex]

[tex]Mean = \frac{54.5*4+62.5*3+70.5*11+78.5*13+86.5*4}{6+3+11+13+4}[/tex]

[tex]Mean = \frac{2547.5}{37}[/tex]

[tex]Mean = 68.9[/tex] -- approximated

Solving (b): The sample variance:

This is calculated as:

[tex]s^2 =\frac{\sum (x - \overline x)^2}{\sum f - 1}[/tex]

So, we have:

[tex]s^2 =\frac{(54.5-68.9)^2+(62.5-68.9)^2+(70.5-68.9)^2+(78.5-68.9)^2+(86.5-68.9)^2}{37 - 1}[/tex]

[tex]s^2 =\frac{652.8}{36}[/tex]

[tex]s^2 =18.1[/tex] -- approximated

Answer:According to the rule, you should be spending no more than 43 percent of your before-tax income on all your debt payments. So, if your gross income per month is $4,000, your total debt including mortgage, auto loans, credit card payments and student loans should be less than $1,720

Step-by-step explanation:

Answer:

65 is the answer okkkkkk

Best of luck

Answer:

(-6, -3) (-3,-3) (-3,-6)

Step-by-step explanation:

Multiple all of the vertices by 1.5.

(-6, -3) (-3,-3) (-3,-6)

Hope I helped!

[enlargment will still be a triangle]

I'm sorry I don't know what this is can you explain it sike

Answer:

Division Expression - 7 ÷ 3

Unit Form - 21 thirds ÷ 3 = 7

Improper Fraction 7/3

Step-by-step explanation:

Hope this helps!! <3

Answer:

A.37 BAGELS

Step-by-step explanation:

100-6

94/2.50

37.6 round down

37 bagels

Answer:

10?

Step-by-step explanation:

I'm assuming it wants you to simplify 3 14/2 if so, then the answer would be 3 14/2 = 10

[tex]3\frac{1}{3}\cdot \:14 =\frac{10}{3}\cdot \:14 =\frac{10\cdot \:14}{3} =\frac{140}{3} =46\frac{2}{3}[/tex]

Answer:

The equation 2d + 18 = 24 can help find the number of days Jerry has been doing sit-ups.

Step-by-step explanation:

During the first day, Jerry did 18 sit-ups, and he proceeded to do 2 more sit-ups each following day, so the expression to represent this situation is 2d + 18. Because he did 24 sit-ups today, to find the number of days he did sit-ups, the equation to solve is 2d + 18 = 24.

Answer:

F=122 g=58 h=122

Step-by-step explanation:

F and h have same angle

H is same angle as 58

Answer:

4

Step-by-step explanation:

2+8 = 10

10/40 = 4

4

Maybe...

Answer:

h=-18

Step-by-step explanation:

h+9=-9

h= --9-9

h=-18

Answer:

H = -18

Step-by-step explanation:

h+9 = -9

-9 = -9

cancels

h = -9 -9

h = - 18

Answer:

A. x+y<10

B. x+y≤10

Step-by-step explanation:

A is correct because they can be less than.

B is correct because there is less than or equal too of numbers of volunteers.

C, D, and E cannot be correct however, because that means that they can be over at any number. Therefore, these three would be incorrect.

Answer:

Sophia took home 2/5 of the pizza that was left over from a party. The amount she took represents 1/2 of a whole pizza. The equation 2/5p=1/2 can be used to find the number of pizzas p left over from the party.

Step-by-step explanation:

Answer:

59 or infant

Step-by-step explanation:

she will either live to be 59 each time or she will live to be a undying God like being

Answer:

17

Step-by-step explanation:

BODMAS

3(9)-12+2

27-12+2

27-10

17

Answer:

17

Step-by-step explanation:

You add what's inside the parenthesis, then rewrite the equation once more, (3)(9)-12+2, then you gotta multiply 3*9 which is 27. Rewrite the equation again, 27-12+2, then you must subtract 27 from 12 which is now 15. So now we're left with 2, 15+2 is 17. If it makes it any easier, think of this equation as losing friends and gaining friends, and now you're left with 17 now.

Answer:

the money after 11 years is £15,735.12

Step-by-step explanation:

The computation of the amount after 11 years is given below:

Future value = Present value × (1 + rate of interest)^number of years

= £9,200 × (1 + 0.05)^11

= £9,200 × 1.05^11

= £9,200 × 1.710339358

= £15,735.12

Hence, the money after 11 years is £15,735.12

Answer:

shrek

Step-by-step explanation:

1+1=2

Answer:

12.6 years

Step-by-step explanation:

Once you have these written out you kinda just have to look for the middle one and in this that is 12.3 and 12.9 so you add them and then divide by 2. When you add them you get 25.2 and when you divide by 2 you get 12.6. So the median of this data set is 12.6.

Answer:

Answer:

A, (13/3 x 5/13)

Step-by-step explanation:

So first, you should change the mixed numbers into improper fractions.  To convert, just multiply the whole number by the denominator and add the numerator.  Do that to both fractions and you should get 13/3 ÷ 13/5.  Since you need to switch to multiplication, switch the sign and flip that fraction/  That asnwer is 13/3 x 5/13.  Hope that helps!  :)

Answer: y=2.608x^2-115.264x+1568.064

Step-by-step explanation:

Answer:

682

Step-by-step explanation:

Population = 853,476

Number of violent crimes = 5817

We are to get violent crime rate per 100000 persons and interpret the result obtained.

Now if population is 1

Crime = 5817/853476

If population is 100000,

Crime = 5817x100000/853476

= 681.56

= 682

We conclude that the violent crime rate is of 682 crimes per 100000

Answer:

f= -   0.5 (5n+31)

     ------------------

               n

Step-by-step explanation:

Answer:

16%

Step-by-step explanation:

= (5/31.25)*100=16%